A recent interpretive letter from the Office of the Comptroller of the Currency will smooth the path for U.S. banks seeking to move deeper into the digital assets business. The OCC letter — Interpretive Letter #1170, Authority of a National Bank to Provide Cryptocurrency Custody Services for Customers1— clarifies that “a national bank may provide cryptocurrency custody services on behalf of customers,” including the “holding of unique cryptographic keys associated with cryptocurrency.” […]